BOOLEAN
MPSetPowerLowPrivate(
PVOID Context
)
/*++
Routine Description:
The section follows the steps mentioned in
Section C.2.6.2 of the Reference Manual.
Arguments:
Adapter Pointer to our adapter
Return Value:
--*/
{
CSR_FILTER_STRUC Filter;
USHORT IntStatus;
MP_PMCSR PMCSR = {0};
ULONG ulResult;
PFDO_DATA FdoData = Context;
DebugPrint(TRACE, DBG_POWER, "-->MPSetPowerLowPrivate\n");
RtlZeroMemory (&Filter, sizeof (Filter));
do
{
//
// Before issue the command to low power state, we should disable the
// interrup and ack all the pending interrupts, then set the adapter's power to
// low state.
//
NICDisableInterrupt(FdoData);
NIC_ACK_INTERRUPT(FdoData, IntStatus);
//
// If the driver should wake up the machine
//
if (FdoData->AllowWakeArming)
{
//
// Send the WakeUp Patter to the nic
MPIssueScbPoMgmtCommand(FdoData, &Filter, TRUE);
//
// Section C.2.6.2 - The driver needs to wait for the CU to idle
// The above function already waits for the CU to idle
//
ASSERT ((FdoData->CSRAddress->ScbStatus & SCB_CUS_MASK) == SCB_CUS_IDLE);
}
else
{
ulResult = FdoData->BusInterface.GetBusData(
FdoData->BusInterface.Context,
PCI_WHICHSPACE_CONFIG,
(PVOID)&PMCSR,
FIELD_OFFSET(MP_PM_PCI_SPACE, PMCSR),
sizeof(PMCSR));
if(ulResult != sizeof(PMCSR)){
ASSERT(ulResult == sizeof(PMCSR));
DebugPrint(ERROR, DBG_POWER, "GetBusData for PMCSR failed\n");
return FALSE;
}
if (PMCSR.PME_En == 1)
{
//
// PME is enabled. Clear the PME_En bit.
// So that it is not asserted
//
MpClearPME_En (FdoData,PMCSR);
}
//
// Set the driver to lower power state by OS
//
}
} while (FALSE);
DebugPrint(TRACE, DBG_POWER, "<--MPSetPowerLowPrivate\n");
return TRUE;
}
VOID
NICExtractPMInfoFromPciSpace(
PFDO_DATA FdoData,
PUCHAR pPciConfig
)
/*++
Routine Description:
Looks at the PM information in the
device specific section of the PCI Config space.
Interprets the register values and stores it
in the adapter structure
Definitions from Table 4.2 & 4.3, Pg 4-9 & 4-10
of the 10/100 Mbit Ethernet Family Software Technical
Reference Manual
Arguments:
Adapter Pointer to our adapter
pPciConfig Pointer to Common Pci Space
Return Value:
--*/
{
PMP_PM_PCI_SPACE pPmPciConfig = (PMP_PM_PCI_SPACE )pPciConfig;
MP_PMCSR PMCSR;
//
// First interpret the PM Capabities register
//
{
MP_PM_CAP_REG PmCaps;
PmCaps = pPmPciConfig->PMCaps;
if(PmCaps.PME_Support & E100_PMC_WAKE_FROM_D0)
{
FdoData->PoMgmt.bWakeFromD0 = TRUE;
}
if(PmCaps.PME_Support & E100_PMC_WAKE_FROM_D1)
{
FdoData->PoMgmt.bWakeFromD1 = TRUE;
}
if(PmCaps.PME_Support & E100_PMC_WAKE_FROM_D2)
{
FdoData->PoMgmt.bWakeFromD2 = TRUE;
}
if(PmCaps.PME_Support & E100_PMC_WAKE_FROM_D3HOT)
{
FdoData->PoMgmt.bWakeFromD3Hot = TRUE;
}
if(PmCaps.PME_Support & E100_PMC_WAKE_FROM_D3_AUX)
{
FdoData->PoMgmt.bWakeFromD3Aux = TRUE;
}
}
//
// Interpret the PM Control/Status Register
//
{
PMCSR = pPmPciConfig->PMCSR;
if (PMCSR.PME_En == 1)
{
//
// PME is enabled. Clear the PME_En bit.
// So that it is not asserted
//
MpClearPME_En (FdoData,PMCSR);
}
}
}
